Main FeatureUrgent grease injection deviceAccording to customer s' requirement, the trunnion ball valves made by our company are provided with devices for urgent grease injection, which are on both the stem and seat for the trunnion ball valves of DN >150mm (NPS), and in the body cavity for the valve of DN < 125mm. When the O ring of stem or the body seat ring is damaged due to accident, the medium leakage between body and stem can be prevented by injecting the sealing grease through the device.Double-block and bleed functionsIn general, our company's trunnion ball valve features the front ball sealing design structure. Each seat of the ball valve can separately cut off the medium at both inlet and outlet of the valve to realize double-block functions. When the ball valve is closed, body cavity and two of the body ends can be blocked with each other even if both the inlet and outlet are under pressure, when the medium left in the body cavity might be bled through the relief valve.Fire safe designWith the valve heated in a fire application, the non-metal material parts such as seat sealing ring of PTFE, O ring for the stem, and sealing gasket for body and bonnet, might be damaged due to high temperature. Our company's special design of auxiliary metal to metal or the graphite seal is provited fo rthe trunnion ball valve to effectively prevent both internal and external leakage of the valve. As required by customers, our company's fire safe design for the trunnion ball valve meets the requirement of API 607, API 6Fa, BS 6755 and JB/T 6899.Self-relief in the body cavityAs the liquid medium left in the body cavity gasifies due to increased temperature, the pressure in the body cavity becomes abnormally higher, when the medium itself in the cavity would propel the seat and self-relieves the pressure to ensure the safety of valve.

Our Advantages:1. We Are Factory: FYV has 3 production bases and 1 foundry which located in Wenzhou, Shanghai and Lishui city of China. The Factory Size in Square Meters: 110, 000. FYV has over 600 staff members, more than 60 technical engineers, a digital process center and more than 350 sets of various middle and large equipments. The annual sales revenue reaches above $80 million US Dollars.2. Regional Sales: We provide specialized sales service refers to different kind of region all over the world. Each sales team member is good at the local language and well experienced to the responsible market. For example: Russian, German, Spanish, Japanese, etc.3. Low MOQ: Our factory owns the casting company by itself. We are always ready for providing the sample and producing some small orders, in order to meet the business well.4. OEM Accepted: We can make the products with the client's demand standard or the custom requirement.5. Complete Service: We are always ready to hear from you, be responding to your enquiry immediately. Our trade manager is always online for you.6. Good Quality: We have strict quality control system and amounts of testing equipments for different kind of valve, such as size, pressure, working environment etc. We are winning the market reputation with the time goes by.7. Quick Delivery: We have the large stock for some hot products.8. Competitive Prices: We are the manufacturing company which not only has our own manufacturing workshop, but the casting company as well.

Main FeatureUrgent grease injection deviceAccording to customer s' requirement, the trunnion ball valves made by our company are provided with devices for urgent grease injection, which are on both the stem and seat for the trunnion ball valves of DN >150mm (NPS), and in the body cavity for the valve of DN < 125mm. When the O ring of stem or the body seat ring is damaged due to accident, the medium leakage between body and stem can be prevented by injecting the sealing grease through the device.Double-block and bleed functionsIn general, our company's trunnion ball valve features the front ball sealing design structure. Each seat of the ball valve can separately cut off the medium at both inlet and outlet of the valve to realize double-block functions. When the ball valve is closed, body cavity and two of the body ends can be blocked with each other even if both the inlet and outlet are under pressure, when the medium left in the body cavity might be bled through the relief valve.Fire safe designWith the valve heated in a fire application, the non-metal material parts such as seat sealing ring of PTFE, O ring for the stem, and sealing gasket for body and bonnet, might be damaged due to high temperature. Our company's special design of auxiliary metal to metal or the graphite seal is provited fo rthe trunnion ball valve to effectively prevent both internal and external leakage of the valve. As required by customers, our company's fire safe design for the trunnion ball valve meets the requirement of API 607, API 6Fa, BS 6755 and JB/T 6899.Self-relief in the body cavityAs the liquid medium left in the body cavity gasifies due to increased temperature, the pressure in the body cavity becomes abnormally higher, when the medium itself in the cavity would propel the seat and self-relieves the pressure to ensure the safety of valve.

Our Advantages:1. We Are Factory: FYV has 3 production bases and 1 foundry which located in Wenzhou, Shanghai and Lishui city of China. The Factory Size in Square Meters: 110, 000. FYV has over 600 staff members, more than 60 technical engineers, a digital process center and more than 350 sets of various middle and large equipments. The annual sales revenue reaches above $80 million US Dollars.2. Regional Sales: We provide specialized sales service refers to different kind of region all over the world. Each sales team member is good at the local language and well experienced to the responsible market. For example: Russian, German, Spanish, Japanese, etc.3. Low MOQ: Our factory owns the casting company by itself. We are always ready for providing the sample and producing some small orders, in order to meet the business well.4. OEM Accepted: We can make the products with the client's demand standard or the custom requirement.5. Complete Service: We are always ready to hear from you, be responding to your enquiry immediately. Our trade manager is always online for you.6. Good Quality: We have strict quality control system and amounts of testing equipments for different kind of valve, such as size, pressure, working environment etc. We are winning the market reputation with the time goes by.7. Quick Delivery: We have the large stock for some hot products.8. Competitive Prices: We are the manufacturing company which not only has our own manufacturing workshop, but the casting company as well.

No.

Parts Name

Materials

Carbon Steel

Low Tem. Steel

Stainless Steel

1

Body

ASTM A216-WCB

ASTM A352-LCB/LCC

ASTM A351-CF8/CF8M

2

Fire safe packing

Graphite

Graphite

Graphite

3

O-ring

NBR/Viton

Viton

Viton

4

Spring seat

ASTM A105+ENP

ASTM A350-LF2+ ENP

ASTM A182-F304/F316

5

Spring

17-7PH/Inconel

17-7PH/Inconel

17-7PH/Inconel

6

Gasket

ASTM A105+ENP

ASTM A350-LF2+ ENP

ASTM A182-F304/F316

7

Adjusting ring

ASTM A105+ENP

ASTM A350-LF2+ ENP

ASTM A182-F304/F316

8

Seat ring

ASTM A105+ENP

ASTM A350-LF2+ENP

ASTM A182-F304/F316

9

Seat

PTFE/RPTFE/NYLON

PTFE/RPTFE/NYLON

PTFE/RPTFE/NYLON

10

Trunnion

ASTM A105+ENP

ASTM A182-F304

ASTM A182-F304/F316

11

Screw

ASTM A193-B7/B7M

ASTM A320 L7

ASTM A193-B8/B8M

12

Drain plug

ANSI 1045

ASTM A182-F304

ASTM A182-F304/F316

13

Sliding bearing

304+PTFE

304+PTFE

304+PTFE/316+PTFE

14

Ball

ASTM A105+ENP

ASTM A350-LF2+ENP

ASTM A182-F304/F316

15

sealant injection

ANSI 1045

ASTM A182-F304

ASTM A182-F304/F316

16

Sliding bearing

304+PTFE

304+PTFE

304+PTFE/316+PTFE

17

Stem

ASTM A182-F6a

ASTM A182-F304

ASTM A182-F304/F316

18

Packing

Graphite

Graphite

Graphite

19

Gasket

304+Graphite

304+Graphite

304+Graphite/316+Graphite

20

Gasket

304+Graphite

304+Graphite

304+Graphite/316+Graphite

21

Bonnet

ASTM A216-WCB

ASTM A352-LCB/LCC

ASTM A351-CF8/CF8M

22

Bolt

ASTM A193-B7/B7M

ASTM A320 L7

ASTM A193-B8/B8M

23

Nut

ASTM A194-2H/2HM

ASTM A194 4

ASTM A194-8/8M

24

Packing case

ANSI 1025

ASTM A182-F304

ASTM A182-F304/F316

25

Screw

ASTM A193-B7/B7M

ASTM A320 L7

ASTM A193-B8/B8M

26

Fire safe packing

Graphite

Graphite

Graphite

27

Pin

ANSI 1045

ANSI 1045

304/316

28

Gland

ASTM A105

ASTM A350-LF2/LF3

ASTM A182-F304/F316

29

Release valve

ANSI 1045

ASTM A182-F304

ASTM A182-F304/F316

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